Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income before noncontrolling interests		$ 11,396	$ 11,087
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		1,160	2,160
Changes in fair value of MSRs, MHFS and LHFS carried at fair value		567	1,664
Depreciation, amortization and accretion		2,478	2,233
Other net losses		317	1,107
Stock-based compensation		1,186	1,176
Originations and purchases of MHFS and LHFS (1)	[1]	(86,008)	(85,821)
Proceeds from sales of and paydowns on mortgages originated for sale and LHFS (1)	[1]	53,404	59,824
Net change in:
Trading assets (1)	[1]	24,477	16,506
Deferred income taxes		1,281	(2,286)
Derivative assets and liabilities (1)	[1]	(2,133)	(10)
Other assets (1)	[1]	1,485	(8,667)
Other accrued expenses and liabilities (1)	[1]	(652)	(394)
Net cash provided (used) by operating activities		8,958	(1,421)
Net change in:
Federal funds sold, securities purchased under resale agreements and other short-term investments		(5,489)	(25,492)
Available-for-sale securities:
Sales proceeds		23,004	22,631
Prepayments and maturities		24,359	15,182
Purchases		(45,649)	(19,602)
Held-to-maturity securities:
Paydowns and maturities		4,606	2,951
Purchases		0	(19,217)
Nonmarketable equity investments:
Sales proceeds		2,146	1,060
Purchases		(1,225)	(1,998)
Loans:
Loans originated by banking subsidiaries, net of principal collected		2,317	(21,537)
Proceeds from sales (including participations) of loans held for investment		6,739	4,736
Purchases (including participations) of loans		(1,976)	(3,146)
Principal collected on nonbank entities’ loans		6,803	5,885
Loans originated by nonbank entities		(5,390)	(5,875)
Net cash paid for acquisitions		(3)	(28,987)
Proceeds from sales of foreclosed assets and short sales		2,974	3,704
Other, net (1)	[1]	(616)	201
Net cash provided (used) by investing activities		12,600	(69,504)
Net change in:
Deposits		(249)	22,161
Short-term borrowings		6,114	22,730
Long-term debt:
Proceeds from issuance		27,990	47,971
Repayment		(47,815)	(14,138)
Preferred stock:
Proceeds from issuance		677	2,101
Cash dividends paid		(807)	(764)
Common stock:
Proceeds from issuance		722	795
Stock tendered for payment of withholding taxes (1)	[1]	(368)	(473)
Repurchased		(4,462)	(4,243)
Cash dividends paid		(3,715)	(3,739)
Net change in noncontrolling interests		(66)	(135)
Other, net		(60)	(45)
Net cash provided (used) by financing activities		(22,039)	72,221
Net change in cash and due from banks		(481)	1,296
Cash and due from banks at beginning of period		20,729	19,111
Cash and due from banks at end of period		20,248	20,407
Supplemental cash flow disclosures:
Cash paid for interest		3,954	2,357
Cash paid for income taxes		$ 2,794	$ 4,255

[1] Prior periods have been revised to conform to the current period presentation.